South Dennis CDP, MA Population By Ancestry in 2021 (ACS-5Yrs)

Updated on March 7, 2024.

Based on the US Census ACS-5Yrs estimates, in 2021, among the 3.26K South Dennis CDP, MA population, 1.00K had Irish ancestry (30.72%), 719 had Unclassified ancestry (22.06%), and 596 had English ancestry (18.29%).

The chart below shows the top 10 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.

You can also see similar information for other Massachusetts cities and places, Massachusetts counties, and for Massachusetts.

South Dennis CDP, MA Percentages of Ancestry of Population in 2021
Irish
Unclassified
English
Italian
German
French Canadian
Other Groups
French (except Basque)
Polish
Finnish
South Dennis CDP, MA Population By Ancestry in 2021
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Ancestry Number of Ancestry Percentage of Population (%)
Irish 1001 30.72
Unclassified 719 22.06
English 596 18.29
Italian 513 15.74
German 304 9.33
French Canadian 237 7.27
Other Groups 224 6.87
French (except Basque) 157 4.82
Polish 156 4.79
Finnish 95 2.92
Swedish 88 2.70
Dutch 77 2.36
Portuguese 74 2.27
American 62 1.90
Scottish 52 1.60
Bulgarian 42 1.29
Brazilian 35 1.07
Lithuanian 28 0.86
Canadian 18 0.55
West Indian (except Hispanic groups) 17 0.52
Jamaican 17 0.52
Armenian 15 0.46
Syrian 14 0.43
Greek 13 0.40
Danish 12 0.37
Welsh 12 0.37
Yugoslavian 11 0.34
British 9 0.28
Scotch Irish 8 0.25
Northern European 7 0.22
Subsaharan African 7 0.22
Cape Verdean 7 0.22
Hungarian 4 0.12